Spectrum
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Revision as of 22:09, 25 March 2005 by Ericcarlson (talk | contribs)
Revision as of 22:09, 25 March 2005 by Ericcarlson (talk | contribs)
Spectrum is the distribution of wavelengths and frequencies.
In scanning and radio frequency uses, we often refer to a bandwidth of spectrum as a "band". These "bands" are frequencies that exist in a continuous range and usually have a common characteristic which identify it as a type of band.
These bands are divided by the area of the spectrum in which they are located. Those "bands" are commonly accepted to conform to the following table:
| Abbreviation | Name | Spectrum |
|---|---|---|
| ELF | Extremely Low Frequency | < 3 kHz |
| VLF | Very Low Frequency | 3 - 30 kHz |
| LF | Low Frequency | 30 - 300 kHz |
| MF | Medium Frequency | 300 kHz - 3 MHz |
| HF | High Frequency | 3 - 30 MHz |
| VHF | Very High Frequency | 30 - 300 MHz |
| UHF | Ultra High Frequency | 300 MHz - 3 GHz |
| SHF | Super High Frequency | 3 - 30 GHz |
| EHF | Extremely High Frequency | 30 - 300 GHz |